Machine for sizing, cupping, and punching rims



oct. 13,1925. 1,556,847

H. W. KRANZ l MAGHINEfFOR SIZING, CUPPING, AND PUNCHING RIMS Filed MEW24, 1920 2 Sheets-Sheetwl oct. 13, 1925 Filed May 24, 1920 2Sheets-Sheet 2 @How m Patented Oct. 13, 192.5.

UNITED STATES PATENT OFFICE.

lnamur w. xnANz, or CLEVELAND, omo, AssIGNon. 'ro THE HYDnAUuc rREssEnSTEEL COMPANY, OF CLEVELAND, OHIO, A CORPORATION F OHIO.

MACHINE 'FOR SIZING, CUPIEING, AND PUNCHIN'G Application mea raggi,1920'. 'smak No. 883,765.

Y and useful Improvement in Machines for Sizing, Cupping, and PunchingRims, of which the followin is a full, clear, and exact description, reerence being had to the accompanying drawings.

This invention relates to a novel construction of machine for shapingand cupping rims particularly intended for use in wire wheels, and theobject of the invention is to provide a simple and efficient apparatusfor quickly and accurately sizing the rim, cuppin the' same to receivethe heads of the spo e spindles and simultaneously punching or indentingthe reverse side of the cup in order to provide a uniform distributionof metal and prevent splitting or cracking during the cupping operation.With these objects in view the invention consists in the novel featuresof construction and in the manner of combining or arranging them, all ofwhich will be fully described hereinafter and set forth in the appendedclaims.

In the drawings forming a part of the specification, Fig. 1. is a viewartly in section and partly in elevation isclosing the operativefeatures of a machine embodying my invention; Fig. 2 is a viewillustrating partly in section' and partlymin top4 plan a' portion ofthe machine em .dying m .invention; and Fig. 3 is an enlar edv etailview of one of the cupping 'punc es.

In the practical embodiment of my invention, I employ a suitable base Ahaving a central circular opening A and working through this centracircular opening is a sha t B carryin a plunger C at the upper endthereof, said plungerl being tapered downwardly as shown at C andcylindrical atthe extreme upper end, as shown at C2. This plunger isthreaded upon the upper end of the shaft B and moves therewith but canbe removed therethrough and a different "plunger substituted whendesired. Mounted upon the base A are a plurality of segments D eachsegment having p ivoted therein an elbow lever E the upper end of whichoperates upon a -sector F carrying a plural-` ity of cupping punches Gand the lower end of this bell crank lever worksbetween and is operatedby the collars H adjustably mounted upon ythe shaft B so as to increasei or decrease the movement of the bell crank.

lever as desired and it will be understood that when the shaftV B ismoved downwardly the lower end of the bell crank lever will be carrieddownwardly throwing the upper end inwardly carrying with 1t the punchsector and there being a plurality of sectors each operated by itsrespective bell crank lever which in turn are all operated at the sametime from the plunger shaft, all of the cupping sectors will moveinwardly the proper distance at one and the same time.l I

arm I in which is mounted a roller L` which is adapted to be engaged bythe tapered or wedge-shaped 'plunger C, saidl y A plunger serving toforce the sectors I radially outwardly asthe plunger descends therebystretching and sizing the rim placed thereon, and `inasmuch as the bellcrank levers are -operatively connected with the plunger, the cuppingsectors will be forced radially inward y at the same time that thesizing and punchingY sectors are forced radially outwardly and in thismanner the series of cupping punches are brought into contact with therim and a series of cup-like depressions produced in said rim andi inorder to prevent the breaking or cracking of said cup-likedepressions-during this operation, I provide a punch M in the sector Ifor each cup, this punch being so arranged The sizing and punchingsectors slide upon the segments as shown in Fig. 1 and lthis springwill' serve to 'move the sectors inwardly as the plunger is raised andthe bell crank levers move the cupping sectors outwardly.

AA top rmg Ois arranged upon the unch sectors and a guide rlng P 'isarrange cenprick punc trally therein and in which the cylindricalportion of the plungler works as most clearl shown in Fig. 1. he cuppingpunches are formed with ahead rtion G which can be coupled to a shan G2b means of a coupling G3 thus enablin t e cuppln punches pro er to beremove and replace when desire .Y Y

In operation, the rim after being rolled to the proper contour is placedwlthin the machine about the sectors I and then when power is applied tothe plunger shaft, the plunger is moved downwardly operating upon thesectors I through the medium of the rollers L carried by the arms I',the

first rtion of said operation serving to stretclioand size the r-im andsimultaneous with the outward movement of the secto'rs I is the radialinward movement of the cupping sectors F bringing the cuppin punchesinto contact with the rim, an punching the cu -like de ressions in thebase thereof, an pressions are being punched, the inner or convex sideof each punch is having a counter de r'ession punched therein by the hesM carried by the sector I. When these. various operations are comcrankleverswithdraw the cupping sectors and the`- l'springs N force thesizing and punching sectors inwardly and the finished rim can then beremoved from the machine. Havin thus described my invention, what I caim is:-

1. In a device of the kind described, the combination with the segmentsof the outer sectors and means for moving the same, of

when t ese cup-like dethe inner sectors and means` for moving themoutwardly, sai-d sectors being movable upon the segments, and a topplate resting upon the inner sectors and springs lnterposed between theinner sectors and the segments.

2. In a device of the kind described, the combination with segments, ofthe outer segments movable thereon, the inner segments resting upon thesegments and having inwardly projecting arms having depending lugs,springs between said lugs and said segments, a top plate restinupon--the inner segments, a gulde ring, a p unger working 1n said guidering and acting upon the arms of the sectors, and bell-cranks for movingthe outer sectors and means connected with the plunger for moving saidbell-cranks.

y 3. In a machine of the kind described, the vertically movable plunger,the guide ring inwhich said plunger works,the top plate in which theguide ring is positioned, the inner sectors upon which the top platerests, the outer sectors, the same.

4. In amachine of the kind described, the combination with thesegments,'of the inner sectors movable thereon, the top plate upon saidsectors, the guide ring and plunger, means for moving said plunger, andmeans interposed between said segments and sectors to move 'said sectorsinwardl said sectors being moved outwardly gy the In testimony` whereof,I hereunto ailix my signature. y

plunger.

HARRY W. KRAiIz.

and means for operating

